import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String s = sc.nextLine();
        String[] arr = s.split(" ");
        int len = 0;
        for (int i = 0; i < arr.length; i++) {
            len += arr[i].length();
        }
        System.out.println(len);
    }
}
